Provide characteristics of a physicist, the merits of SI units, fundamental mechanical quantities, and complete a table of physical quantities.

Here are the answers to question 1:

a) Three characteristics of a physicist are:

• Curiosity and a desire to understand how the universe works.
• Strong analytical and problem-solving skills to interpret data and formulate theories.
• Mathematical proficiency to describe physical phenomena and make predictions.

b) The merits of using SI units for measurement include:

• Universality: SI units are used globally, facilitating international communication and collaboration in science, technology, and trade.
• Coherence: The system is coherent, meaning that derived units are formed from base units without the need for conversion factors.
• Decimal system: It is a decimal system, making conversions between multiples and submultiples of units straightforward (e.g., 1000 meters in 1 kilometer).

c) The three fundamental mechanical quantities are:

• Mass
• Length
• Time

d) The completed Physical Quantity table is:

Physical quantity	Units	Symbol
Amount of substance	mole	Mol
Electric current	Ampere	A
Length	meter	M
Mass	kilogram	Kg
Time	Second	s
Temperature	kelvin	K
Luminous intensity	Candela	cd